A Computer for Your Car's Windshield

Daimler, GM Test Data Displays

By

Greg Bensinger

Updated Dec. 3, 2012 8:24 p.m. ET

Auto makers have stuffed their vehicles with a dizzying array of technology over the years, from video screens to Bluetooth wireless to air bags. But one part of the car has remained stubbornly resistant to change: the windshield.

That is about to change. Auto makers including General Motors Co. and Daimler AG are working on specially designed windshields that they hope will one day share with drivers crucial information about their...